IRT DDA-4320 User manual

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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IRT Eurocard
Type DDA-4320
ASI / SDI / STM-1 Path Protection and Distri ution Amplifier
&
ZDA-4320RH
Handshake Changeover Assem ly
Designed and manufactured in Australia
IRT can e found on the Internet at:
http://www.irtelectronics.com
I R T Electronics Pty Ltd A.B.N. 35 000 832 575
26 Hotham Parade, ARTARMON N.S.W. 2064 AUSTRALIA
National: Phone: [phone] Fax: [phone]
International: [phone] [phone]
Email: [e-mail]
Web: www.irtelectronics.com

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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IRT Eurocard
Type DDA-4320
ASI / SDI / STM-1 Path Protection and Distri ution Amplifier
&
ZDA-4320RH
Handshake changeover assem ly
Revision History
Revision Date By Change Description Applica le to:
0 25/01/2010 AL Origin l Issue. Firmw re version
F3V3 S3V2
S/N: 0912001-0912016
1 22/02/2010 AL Number of outputs reduced to 4 nd AIS detection
LED dded to front p nel.
Firmw re version
F3V3 S3V2
S/N: ≥ 0912017
2 26/05/2010 AL SW3-7 DIP switch setting (invert sign l) dded.
Extr st tes in SNMP sign l st tus dded nd
re-ordered.
Firmw re version
F3V4 S3V3
S/N: ≥ 0912017
3 04/08/2010 AL SNMP functions dded nd ch nged. Socket number
design tors (SKx) dded to inputs nd outputs.
Firmw re version
DDA4320 F4V0 S4V0
S/N: ≥ 0912017
4 01/09/2010 AL Al rm conditions ch nged. SNMP p r meters
ch nged.
Firmw re versions
DDA4320 F4 V1 S4V1
pplic ble to S/N: ≤ 0912030
& DDA4320 F4V1 S4V1
pplic ble to S/N ≥ 1009001
5 24/09/2010 AL DIP switch settings ch nged. Extr d t st tes dded.
SNMP descriptors ch nged to m tch MIB 4.4.
Firmw re versions
DDA4320 F4 V2 S4V2
pplic ble to S/N: ≤ 0912030
& DDA4320 F4V2 S4V2
pplic ble to S/N ≥ 1009001
6 01/11/2010 AL Switch SW3-6 oper tion reversed. Extern l l rm
inform tion ch nged to include AIS detected in STM-1
d t . Output 6 socket design tor corrected to SK8.
Firmw re versions
DDA4320 F4 V6 S4V4
pplic ble to S/N: ≤ 0912030
& DDA4320 F4V6 S4V4
pplic ble to S/N ≥ 1009001
7 15/11/2010 AL Pin numbers dded to Al rm descriptor in
specific tions section nd input l rm descriptor
upd ted to include power loss to the module.
SW3-7 descriptor in configur tion section modified for
better user underst nding.
Firmw re versions
DDA4320 F4 V6 S4V4
pplic ble to S/N: ≤ 0912030
& DDA4320 F4V6 S4V4
pplic ble to S/N ≥ 1009001

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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IRT Eurocard
Type DDA-4320
ASI / SDI / STM-1 Path Protection and Distri ution Amplifier
&
ZDA-4320RH
Handshake changeover assem ly
Instruction Book
T ble of Contents
Section P ge
Revision History 2
Oper tion l S fety 3
Gener l Description 4
Function l Di gr ms 5
DDA-4320 Technic l Specific tions 6
ZDA-4320RH Technic l Specific tions 7
Configur tion 8
Inst ll tion 9
St nd- lone Oper tion 9
Input & Outputs 9
St nd- lone Al rm Connections 9
H ndsh king Oper tion 10
Al rm nd Extern l Control Connections 10
Front P nel Indic tors nd Switches 10
Front nd re r l youts 11
SNMP – Wh t Is It? 12
DDA-4320 SNMP Functions 14
M inten nce & Stor ge 16
W rr nty & Service 16
Equipment return 16
This instruction book pplies to units with seri l numbers ≥ 0912017 & ≤ 0912030 with firmw re version
DDA4320 F4 V6 S4V4 nd seri l numbers ≥ 1009001 with firmw re version DDA4320 F4V6 S4V4.
Operational Safety:
WARNING
Oper tion of electronic equipment involves the use of volt ges nd currents th t
m y be d ngerous to hum n life. Note th t under cert in conditions d ngerous
potenti ls m y exist in some circuits when power controls re in the OFF position.
M inten nce personnel should observe ll s fety regul tions.
Do not m ke ny djustments inside equipment with power ON unless proper
prec utions re observed. All intern l djustments should only be m de by suit bly
qu lified personnel. All oper tion l djustments re v il ble extern lly without
the need for removing covers or use of extender c rds.

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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IRT Eurocard
Type DDA-4320
ASI / SDI / STM-1 Path Protection and Distri ution Amplifier
&
ZDA-4320RH
Handshake Changeover Assem ly
General Description
The DDA-4320 p th protection nd distribution mplifier covers wide r nge of distribution nd monitoring
functions for ASI, SDI or STM-1 sign ls.
Four outputs re provided t the re r of the module. The re r ssembly includes byp ss rel y to switch the Input
to Output 6
1
in the event of power f ilure.
The DDA-4320 incorpor tes protection f cility for switching three of the outputs between sign ls from
comp nion DDA-4320 when loss of input is detected. For this configur tion, speci l double width re r ssembly
(type ZDA-4320RH) is required to link the sign l nd logic sections of the two modules.
Ch ngeover-inhibit nd ch ngeover-request switches re provided on the front p nel for use where modules re
so linked.
A m nu l ch ngeover request m y be m de either loc lly by using the front p nel switch, remotely vi
connection on the re r ssembly, or vi Simple Network M n gement Protocol (SNMP) when inst lled in n IRT
fr me fitted with SNMP c p bility.
Applications:
• Stand alone ca le equaliser and distri ution amplifier.
• Paired for redundant path protection switching.
Standard features:
• For use as uffer or distri ution amplifier.
• 4 x in-phase reclocked outputs.
• Protection switching capa ility.
• Selecta le for either ASI, SDI or STM-1 applications.
• Automatic input equalisation to 250 metres.
• Automatic output muting on no input.
• Relay ypass on loss of power.
• Front panel indicators provide monitoring of presence of input signal at 270 M /s (ASI/SDI) or
155 M /s (STM-1).
• SNMP monitoring and control.
Accessories availa le:
ZDA-4320RH double re r ssembly for h ndsh ke: Connects two dj cent DDA-4320’s for utom tic
ch ngeover of five of the six outputs in the event of f ult
being detected, plus p ss through of the rem ining one on
both c rds.
1
NOTE: Four Outputs only - outputs 3 & 4 not fitted.

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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Functional Diagrams
SW1
SW2
SW3-1
SW3-2
SW3-3
SW3-4
SW3-5
SW3-6
SW3-7
O/P 5
(SK7)
O/P 2
(SK5)
O/P 1
(SK9)
OUTPUTS
SIGNAL
PROCESSING
SIGNAL FAIL
DETECTION
MAIN/STBY
LOGIC
INPUT
(ASI/SDI)
(STM-1)
(SK2)
POWER FAIL
ALARM O/P
RL 2
BLOCK DIAGRAM DDA-4320 SIGNAL PATH
O/P 6
(SK3)
Relay Bypass on loss of power
EQUALISER RECLOCKER
SIGNAL FAIL
ALARM O/P
RL 1
+V
dc
SNMP
NOTE: Front panel switches (SW1 & SW2) valid only when used
with ZDA-4320RH double width rear assembly.
Outputs 3 (SK8) & 4 (SK4) not fitted.
CHANGE ALLOW / INHIBIT
CHANGE REQUEST
SET RECLOCKER RATE
(SW3-1, SW3-2 & SW3-3)
EQUALISER REDUCTION
ENABLE OUTPUT AIS
ENABLE SWITCHING ON AIS
DISABLE SNMP ALARMS
Handshake diagram 2 x DDA-4320’s
O/P 6
(SK8)
INPUT A
(SK6)
RL5B RL5A
OUTPUTS
*
RL1B
RL1A
RL2A
INPUT B
(SK5)
O/P 2
(SK3)
RL4A
O/P 1
(SK11)
RL4B
O/P 5A
(SK9)
DDA SIGNAL
PROCESSING
O/P 5B
(SK1)
DDA SIGNAL
PROCESSING
NOTE: * Outputs 3 (SK10) & 4 (SK2) not fitted.
†On loss of power to both cards, only one input (A or B) can be switched to O/P 6 (SK8),
dependent upon which card was acting as the active feed as determined by the
position
of relay RL2A.
Relay Bypass
†
on loss of power
Relay Bypass
†
on loss of power

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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DDA-4320 Technical Specifications
Input:
Number 1.
Imped nce 75 Ω, BNC.
Type 270Mb/s / ASI / SDI, or 155Mb/s STM-1.
Return loss >15 dB 5 MHz to 270 MHz.
Equ lis tion Autom tic, better th n 250 metres t 270 Mb/s for Belden 8281 or equiv lent c ble
(reduces to pprox. 200m when SW3-4 is ON).
Outputs:
Number 4 ASI / SDI, or STM-1.
(Rel y byp ss of input (SK2) to output (SK3) on loss of power or remov l of c rd).
Type Reclocked.
Level 800 mV ±10% into 75 Ω (270Mb/s / ASI / SDI / STM-1 NRZ encoded);
1.0 V. ±10% into 75 Ω (STM-1 CMI encoded).
Imped nce 75 Ω, BNC.
Return loss >15 dB 5 MHz to 270 MHz.
DC offset Nil.
Performance :
Reclocking Select ble for 270 Mb/s / ASI / SDI, or 155 Mb/s STM-1 oper tion.
Rise time <1.5 ns, (850 ps typic lly).
Intrinsic jitter <0.1 UI (me sured with up to 300m of Belden 8281 or equiv lent c ble).
Front Panel Indicators & Controls:
270Mb LED (green) for input m tching 270Mb/s, ASI, or SDI sign l types.
STM-1 LED (green) for input m tching STM-1 (or AIS) sign l types.
MAIN LED (green) for module cting s M in p th when used with ZDA-4320RH re r
ssembly. Indic tes power to module when used in st nd- lone oper tion.
STANDBY LED (green) for module cting s St ndby p th when used with ZDA-4320RH re r
ssembly. Not v lid in st nd- lone oper tion.
DATA LOSS LED (red) when no input is present, or inv lid input sign l (not pplic ble to AIS).
AIS LED (red) when Al rm Indic tion Sign l (AIS) detected in STM-1 d t .
CHANGE ALLOW Allow switching to M in, when used with ZDA-4320RH re r ssembly.
INHIBIT Switching to M in inhibited, when used with ZDA-4320RH re r ssembly.
REQUEST Switch to M in, when used with ZDA-4320RH re r ssembly nd Ch nge Allow
switch set.
Alarm:
Connector type 3-pin Phoenix style.
Sign l loss - Pin 1 Open circuit on loss of input, input sign l does not m tch set r te (not locked),
AIS detected in STM-1 d t , or loss of power.
Power loss - Pin 2 Open circuit on loss of power.
Pin 3 Ground.
Power requirement:
Volt ge 28 V c CT (14-0-14) or ±16 Vdc
Consumption 6.5 VA
Other:
Temper ture r nge 0 - 50° C mbient.
Mech nic l Suit ble for mounting in IRT 19" r ck ch ssis with input, output nd power
connections on the re r p nel.
Finish: Front p nel Grey b ckground, bl ck lettering & red IRT logo.
Re r ssembly Det ch ble silk-screened PCB with direct mount connectors to Euroc rd nd
extern l sign ls.
Dimensions 6 HP x 3 U x 220 mm IRT Euroc rd.
St nd rd ccessories Re r connector ssembly with m tching connector for l rm output.
Option l ccessories SMU-4000 SNMP plug-in module for use with 4000 series fr me fitted with SNMP
“Agent”.
ZDA-4320RH double width re r ssembly, for h ndsh ke connection of two
DDA-4320's.
Due to our policy of continuing development, these specifications are su ject to change without notice.

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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ZDA-4320RH Technical Specifications
Inputs:
Number 2 [A (SK6) & B (SK5)].
Type 270Mb/s / ASI / SDI, or STM-1 (dependent on DDA-4320 configur tion setting).
Imped nce 75 Ω, BNC.
Return loss >15 dB 5 MHz to 270 MHz.
Outputs:
Number 3 switched [outputs 1 (SK11), 2 (SK3) & 6 (SK8)]
2
nd
2 fixed [outputs 5A (SK9) & 5B (SK1)].
(Rel y byp ss of ctive input (SK5 or SK6) to output (SK8) on loss of power or
remov l of both c rds).
Type 270Mb/s / ASI / SDI, or STM-1 (dependent on DDA-4320 configur tion setting).
Imped nce 75 Ω, BNC.
Return loss >15 dB 5 MHz to 270 MHz.
Controls & alarms:
Connector 2 x 5-pin Phoenix style (A & B)
Pin 1 T lly – connection to ground indic tes th t the corresponding module is the
‘M in’ p th.
2 Extern l ch ngeover request
3
– connecting to ground will m ke this module ‘M in’.
3 Input Al rm
4
– n open circuit indic tes th t there is no input sign l present, input
sign l does not m tch the set sign l type, AIS detected in STM-1 d t , or power to
the module h s f iled.
4 Power F il
4
– n open circuit indic tes th t power to the module h s f iled.
5 Ground.
NOTE: 2 Outputs 3 (SK10) nd 4 (SK2) not fitted.
3 Corresponding front p nel toggle switches of module must be in the ‘Ch nge Allow’ position.
4 The non- l rm st te is connection to ground vi FET rel y.
Changeover logic:
A ch ngeover to the comp nion module will occur under ny of the following conditions:
Loss of input sign l or input sign l does not m tch the set sign l type;
AIS detection l rm (provided AIS is not dis bled by switch SW3-6);
Loss of power; nd
M nu l ch ngeover request either by the DDA-4320 front p nel switches, extern lly vi
connection to ground on the Ch ngeover Request pin on the ZDA-4320RH re r ssembly, or
vi SNMP.
In ll of the bove c ses switching will occur only if the comp nion module is free of the s me defects.
The m nu l ch ngeover requests (loc l nd remote) require th t the ch ngeover inhibit switch is not ctiv ted on
the module currently cting s the St ndby unit.
Priority logic:
The priority switching in norm l mode follows non reverting logic which dict tes:
In the event of f ilure of the M in DDA-4320, the St ndby DDA-4320 will ssume control of the switched outputs
nd become M in c using the f iled p th DDA-4320 to become St ndby. This implies th t when the f iled p th is
restored it will rem in s St ndby nd not become M in unless either f ilure of M in occurs or m nu l
ch ngeover is requested.
Power on reset:
When power is pplied to the p ir, the module which w s l st oper ting s M in will rem in s M in.
When power is pplied to p ir for the first time it m y be necess ry to request m nu l ch ngeover to force the
desired module to become M in.
Due to our policy of continuing development, these specifications are su ject to change without notice.

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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Configuration
Switch Settings:
Input signal type (rate set) SW3-1 SW3-2 SW3-3
SNMP Setting OFF OFF X (OFF or ON)
STM-1 (155Mb/s) CMI encoded ON OFF OFF
STM-1 (155Mb/s) NRZ
5
OFF ON OFF
270Mb/s
6
ON ON OFF
ASI ON OFF ON
SDI OFF ON ON
ASI/SDI ON ON ON
SW3-4 ON Reduced
7
c ble equ lis tion, ≈ 200m;
OFF Norm l c ble equ lis tion, > 250m.
SW3-5 ON En ble output AIS
8
on loss of sign l, for STM-1 only;
OFF Dis ble output AIS
8
on loss of sign l, for STM-1 only.
SW3-6 ON En ble ch ngeover on AIS
8
;
OFF Dis ble ch ngeover on AIS
8
.
SW3-7 ON Dis ble m jor nd minor SNMP l rms to the fr me Agent (CDM c rd)
9
;
OFF En ble m jor nd minor SNMP l rms to the fr me Agent (CDM c rd)
9
.
NOTE: 5 For optic l tr nsmission, the STM-1 sign l presents n NRZ form t, without the CMI encoding
used in electric l tr nsmission. In this inst nce it is not n ctu l optic l interf ce, but n
electric l sign l th t c n be fed into n electric l to optic l converter to cre te true optic l
STM-1 sign l.
6 270Mb/s setting includes ASI, SDI or ny other 270Mb/s type of sign l conforming to the
specified input level p r meters, where s ASI/SDI setting is only for ASI or SDI type of sign ls.
7 For use with shorter c ble runs or use in noisy environment.
8 AIS st nds for Al rm Indic tion Sign l nd is defined s ll 1’s in the d t stre m.
9 When using TRAPS vi SNMP, depending on how system is set up, in order to void double
reporting of l rms vi the DDA-4320 c rd itself nd the CDM c rd (SNMP Agent) of the
fr me, m jor nd minor SNMP l rms th t re reported to the CDM c rd of the fr me c n be
dis bled.

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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Installation
Pre-installation:
Handling:
This equipment m y cont in or be connected to st tic sensitive devices nd proper st tic free h ndling prec utions
should be observed.
Where individu l circuit c rds re stored, they should be pl ced in ntist tic b gs. Proper ntist tic procedures
should be followed when inserting or removing c rds from these b gs.
Power:
AC m ins supply: Ensure th t oper ting volt ge of unit nd loc l supply volt ge m tch nd th t correct r ting
fuse is inst lled for loc l supply.
DC supply: Ensure th t the correct pol rity is observed nd th t DC supply volt ge is m int ined within
the oper ting r nge specified.
Earthing:
The e rth p th is dependent on the type of fr me selected. In every c se p rticul r c re should be t ken to ensure
th t the fr me is connected to e rth for s fety re sons. See fr me m nu l for det ils.
Signal earth: For s fety re sons connection is m de between sign l e rth nd ch ssis e rth. No ttempt should
be m de to bre k this connection.
Installation in frame or chassis:
See det ils in sep r te m nu l for selected fr me type.
Stand-alone Operation:
Input & Outputs:
For use with supplied st nd rd re r ssembly (ZDA-4320).
Input nd Outputs re 75 Ω BNC type for connection with high qu lity 75 Ω co xi l c ble. Input is self-termin ting.
A rel y byp ss is provided on the re r ssembly between the Input (SK2) nd Output 6 (SK3), the output connector
closest to the input connector. Should the c rd be removed from the re r ssembly mounted within the fr me, or
if power f ilure occurs, the input sign l will still p ss through to this output. For situ tions requiring “critic l”
p th, connect to Output 6 (SK3).
Stand-alone Alarm Connections:
A 3-pin Phoenix style screw connector (PL2) is provided on the re r ssembly of the module providing the following
l rm conditions:
Pin 1 Input Al rm
10
– n open circuit indic tes th t there is no input sign l present, input
sign l does not m tch the set sign l type, AIS is detected in STM-1 d t , or power
to the module h s f iled.
2 Power F il
10
– n open circuit indic tes th t power to the module h s f iled.
3 Ground.
NOTE: 10 The non- l rm st te is connection to ground vi FET rel y.

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Handshaking Operation:
For use with double width re r ssembly (ZDA-4320RH)
Inst ll two DDA-4320 units in dj cent slots in 3RU fr me. Use the ZDA-4320RH double width re r ssembly in
pl ce of the st nd rd re r ssemblies. As viewed from the front of the fr me, the left module is design ted s ‘A’
nd the right module is design ted s ‘B’.
Two BNC inputs re provided, A (SK6) nd B (SK5). Set module priority by pressing the front p nel ch nge request
button on your chosen M in feed ensuring correct LED lights on e ch unit – M in nd St ndby. The Ch nge-
Allow/Inhibit switch must be set to the Allow position for the Ch nge-Request button to work.
M in feed is now connected to switched outputs 1 (SK11), 2 (SK3) nd 6 (SK8) on the ZDA-4320RH re r connector
ssembly. Both M in nd St ndby feed output 5 out on their own BNC connectors (SK9 & SK1). Note th t these
two outputs re unswitched nd re therefore unsuit ble for m in progr m feeds. They re, however, suit ble for
monitoring the module’s perform nce.
A rel y byp ss is provided on the re r ssembly between the A & B Inputs nd Output 6 (SK8), the output
connector closest to the input connectors. Should both c rds be removed from the double width re r ssembly
mounted within the fr me, or if power f ilure occurs, the current M in input sign l will still p ss through to this
output. For situ tions requiring “critic l” p th, connect to Output 6 (SK8).
Alarm and External Control Connections:
Al rm nd extern l ch ngeover functions ppe r on two 5-pin Phoenix style screw connectors (PL1 nd PL6), e ch
controlling its relev nt module. PL1 corresponds to the ‘B’ module nd PL6 corresponds to the ‘A’ module.
Pin 1 T lly – connection to ground indic tes th t the corresponding module is
cting s the ‘M in’ p th.
2 Extern l ch ngeover request
11
– connecting to ground will m ke this module
‘M in’ in h ndsh ke mode.
3 Input Al rm
12
– n open circuit indic tes th t there is no input sign l present,
input sign l does not m tch the set sign l type, AIS detected in STM-1 d t , or
power to the module h s f iled.
4 Power F il
12
– n open circuit indic tes th t power to the module h s f iled.
5 Ground.
NOTE: 11 Front p nel toggle switch of module must be in the ‘Ch nge Allow’ position.
12 The non- l rm st te is connection to ground vi FET rel y.
Front Panel Indicators and Switches:
The st tus of the switched outputs is indic ted by the ‘MAIN’ nd ‘STANDBY’ front p nel LEDs (green).
When used s st nd- lone distribution mplifier the ‘STANDBY’ front p nel LED is not pplic ble.
Loss if sign l input or input sign l does not m tch the set sign l type is indic ted by the ‘DATA LOSS’ front p nel
LED (red). Not pplic ble to AIS.
Al rm Indic tion Sign l (AIS) detection is indic ted by the ‘AIS’ front p nel LED (red).
An input sign l presence is indic ted by either the “270Mb” front p nel LED (green) for 270Mb/s sign ls such s ASI
or SDI, or the “STM-1” front p nel LED (green) for 155Mb/s STM-1 sign ls (CMI encoded or NRZ) or AIS.
Two front p nel ch ngeover switches llow m nu l switching between M in nd St ndby modes when oper ting
the DDA-4320 s p ir with the ZDA-4320RH double width re r ssembly. To select module s M in, press the
Ch nge-Request pushbutton of this module. The Ch nge-Allow/Inhibit switch must be set to the Allow position for
the Ch nge-Request button to work.
The front p nel ch ngeover switches h ve no function when the DDA-4320 is used in st nd- lone situ tion.

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Front & rear panel connector diagrams
The following front p nel nd re r ssembly dr wings re not to sc le nd re intended to show connection order
nd pproxim te l yout only.
ZDA-4320 - St nd rd re r ssembly for single c rd use.
ZDA-4320RH - Double width re r ssembly for switching between two DDA-4320’s.
1 Alarm on loss of input, input signal invalid, AIS detected, or loss of power.
2 Alarm on loss of power.
3 Ground.
PL2
INPUT
OUT 1
OUT 5
OUT 2
OUT 6
PL5
PL6
1
2
3
PL2
INPUT A
OUT 5A
OUT 6
OUT 5B
OUT 2
PL3
PL2
PL5
PL4
OUT 1
INPUT B
1
2
3
4
5
PL1
1
2
3
4
5
PL6
*
*
NOTE: Rel y byp ss between INPUT nd OUT 6 on loss of power.
*
ZDA-4320 ZDA-4320RH
N140
ALLOW
INHI BIT
REQUEST
STANDBY
CHANGE
DATA
LOSS
MAIN
D D A - 4 32 0
STM-1
270Mb
AIS
SK5
SK6
SK1
SK3
SK11
SK9
SK8
SK2
SK3
SK5
SK7
SK9
1 Tally B - unit B is Main. 1 Tally A – unit A is Main.
2 C/O request – select B as Main. 2 C/O request – Select A as Main.
3 3
4 Alarm on loss of B power. 4 Alarm on loss of A power.
5
Ground.
5
Ground.
PL1 PL6
Alarm on loss of B input, B input invalid, Alarm on loss of A input, A input invalid,
AIS detected on B, or loss of B power. AIS detected on A, or loss of A power.

DDA-4320 & ZDA-4320RH Instruction Book Revision 7
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SNMP
What Is It?
SNMP st nds for Simple Network M n gement Protocol. It is n pplic tion l yer protocol for m n ging IP
(Internet Protocol) b sed systems. SNMP en bles system dministr tors to m n ge system perform nce, nd to
find nd solve system problems. SNMP runs over UDP (User D t gr m Protocol), which in turn runs over IP.
Three types of SNMP exist: SNMP version 1 (SNMPv1), SNMP version 2 (SNMPv2) nd SNMP version 3 (SNMPv3). It
is not the intention here to discuss the differences between v rious versions, only to bring ttention to the f ct
th t IRT Electronics modules, fitted with SNMP c p bility, use SNMPv1.
An SNMP m n ged network consists of three key components: Network M n gement Systems (NMS), agents, nd
managed devices.
An NMS is the console through which the network dministr tor performs network m n gement functions, such
s monitoring st tus (e.g. l rm st tes) nd remote controlling, of set of m n ged devices. One or more NMSs
must exist on ny m n ged network. Gener lly the NMS is computer running third p rty SNMP control softw re.
There re number of third p rty SNMP softw re pplic tions currently v il ble on the m rket.
An NMS polls, or communic tes with, n agent. An agent is network m n gement softw re module th t resides
in managed device. An agent h s loc l knowledge of m n gement inform tion nd tr nsl tes th t inform tion
into form comp tible with SNMP. The agent, therefore, cts s n interf ce between the NMS nd the m n ged
devices. The NMS sends request mess ge, nd control comm nds for the m n ged devices, to the agent, which
in turn sends response mess ge, cont ining inform tion bout the managed devices, b ck to the NMS.
A managed device cont ins n SNMP agent nd resides on m n ged network. Managed devices collect nd store
m n gement inform tion nd m ke this inform tion v il ble to NMSs using SNMP.
Managed device agent v ri bles re org nised in tree structure known s M n gement Inform tion B se
(MIB). Within the MIB re p r meters pert ining to the managed device. An Object Identifier (OID) number within
the MIB defines the m n ged device type. This is unique number specific to the model of managed device. Other
inform tion rel ting to the device is lso stored, inform tion such s l rm st tes, controll ble settings, etc. The
MIB tree is org nised in such w y th t there will be no two MIB files with conflicting pl cements.
Norm lly n NMS polls n agent for inform tion rel ting to the MIB in m n ged device to be sent b ck to the
NMS. When cert in conditions re met within the MIB, such s m jor l rm conditions, for ex mple, the agent
utom tic lly sends wh t is known s trap to the NMS without ny prompting from the NMS. This llows
utom tic notific tion of predetermined event.
NMS
NMS
IP
Network
MIB
SNMP Agent
Protocol Engine SNMP Agent
MIB
SNMP Agent
Protocol Engine SNMP Agent
MIB
SNMP Agent
Protocol Engine SNMP Agent
SNMP Block Diagram

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SNMP with IRT Products:
IRT Electronics currently employs SNMPv1 with its SNMP c p ble fr mes. The fr me cts s n agent when fitted
with CDM-xxxx module. This module h s its own design ted slot next to the power supply so s to not ffect the
number of modules th t the fr me will t ke. Communic tion between the NMS, the fr me nd its lo ded modules
re vi this CDM-xxxx module. Note th t the NMS softw re is third p rty nd not supplied by IRT Electronics.
Ethernet connection for SNMP oper tion is vi n RJ45 connector on the re r of the fr me, below the m ins inlet.
Ethernet r te runs t either 10 b seT or 100 b seT.
Fr me p r meters, such s N me, Address nd Loc tion, re set vi n RS232 interf ce, D9 connector on the re r
of the fr me below the m ins inlet. A softw re termin l emul tor, such s Ter Term or HyperTermin l, is used for
setting nd re ding the p r meters of the fr me.
IRT modules th t re SNMP comp tible need plug-in SMU-4000 module with progr m relev nt to the module
th t it is plugged into. Depending on the module, besides the module identific tion, p r meters such s l rm
st tes, inputs nd controls etc. re communic ted to the CDM-xxxx agent vi d t bus on the re r of the fr me.
Thus the CDM-xxxx collects inform tion on wh t is lo ded within the fr me, wh t positions they occupy, nd their
current st tus for communic tion to the NMS when the NMS sends request for inform tion.
In the event of m jor l rm from ny of the SNMP comp tible modules, or power supplies, trap is utom tic lly
sent by the CDM-xxxx agent to the NMS without ny prompting by the NMS. This lerts the oper tor to ny f ult
conditions th t m y exist th t need immedi te ttention.
FRU-4000
FRAME
110/240 V 50/60 Hz
0.7 A (max.)
FUSES
110/120 Vac
1A S.B.
220/240 Vac
500 mA S.B.
AS3260 approval no.: CS6346N
Ass. no.: 804692
+
-
48Vdc
Alarm
RS232
Ethernet
IRT SNMP Connections
IRT modules fitted
with SMU-4000
PSU’s
CDM
-
xxxx
IRT SNMP Frame
IRT SNMP Frame
IRT modules fitted
with SMU-4000
PSU’s
CDM
-
xxxx
IP
Network
Ethernet Cable
Ethernet Cable
Ethernet Cable
NMS
IRT SNMP Setup

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DDA-4320 SNMP Functions:
With the DDA-4320 inst lled in n IRT fr me fitted with SNMP c p bility, the following SNMP functions c n be
monitored nd controlled by n SNMP Network M n gement System (NMS), (Requires MIB revision > 4.4):
Irt4320dd Al rms - Re d the st tus of the Urgent nd Non-Urgent l rms:
(1) noAl rm.
(2) isDetected: AIS detected in STM-1 d t .
(3) urgentAl rm: Inv lid input (not pplic ble to AIS).
irt4320dd ModuleSt tus - Re d nd set oper tion l st tus in rel tion to p rtner module:
(1) m in: This module controls the sh red outputs. To c pture sh red outputs, set
this v lue.
(2) st ndby: P rtner module controls the sh red outputs.
NOTE: To rele se the sh red outputs, set p rtner module to m in.
irt4320dd InputInfo - Re d the st tus of the input d t sign l:
(1) notPresent: Input not detected.
(2) notLocked: Input detected but reclocker not locked.
(3) locked: Reclocker locked to selected input d t r te.
(4) isDetected: AIS detected in STM-1 d t .
(5) siDetected: ASI d t stre m detected.
(6) sdiDetected: SDI d t stre m detected.
irt4320dd InvertInput - Invert the input d t before processing:
(1) dis bled: Input sign l not inverted.
(2) en bled: Input sign l inverted.
NOTE: ASI sign ls re ph se sensitive. If sign l inversion h s occurred somewhere
e rlier in the system, set this setting to en ble (2) to correct the d t stre m.
irt4320dd D t R te - Set the input d t r te for the reclocker:
(1) stm1-cmi: St nd rd STM-1 electric l encoding.
(2) stm1-nrz: STM-1 optic l type encoding.
(3) mbps270: 270Mb/s types of sign ls (including both ASI nd SDI).
(4) si: ASI types of sign l only.
(5) sdi: St nd rd definition SDI types of sign l only.
(6) si-sdi: Either ASI or st nd rd definition SDI types of sign ls only.
NOTE: Switches SW3-1, SW3-2 nd SW3-3 on DDA-4320 override this SNMP setting.
irt4320dd D t R teCtrl - Re d the method of user inter ction:
(1) snmp: SNMP setting is ctive.
(2) pcbSwitches: Switches SW3-1, SW3-2 nd SW3-3 on DDA-4320 override SNMP
setting.
irt4320dd C bleEQ - Re d the mount of c ble equ lis tion employed:
(1) norm l: M ximum c ble equ lis tion v il ble.
(2) reduced: Reduced equ lis tion g in for use in noisy environment.
NOTE: Switch SW3-4 on DDA-4320 controls this setting.
irt4320dd OutputAIS - Re d the st tus of the Output AIS in STM-1 on loss of input STM-1 sign l:
(1) dis bled: No AIS outputted in STM-1 on loss of input STM-1 sign l.
(2) en bled: AIS outputted in STM-1 on loss of input STM-1 sign l.
NOTE: Switch SW3-5 on DDA-4320 controls this setting.
irt4320dd Ch ngeOnAIS - Re d whether ‘Ch nge to p rtner module on detection of AIS’ is set:
(1) ch nge: On detection of AIS in STM-1 input, ch nge to comp nion module if
possible.
(2) noCh nge: Does not ch nge to comp nion module on detection of AIS in STM-1
input.
NOTE: Switch SW3-6 on DDA-4320 controls this setting.

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irt4320dd ModuleSt tusTr pEn - Set whether Tr p is sent on ch nge of oper tion l st tus, th t is M in ↔ St ndby:
(1) dis bled: Tr p not sent on ch nge of module st te.
(2) en bled: Tr p sent on ch nge of module st te.
irt4320dd Al rmsTr pEn - Set whether Tr p on ch nge of l rms st tus, th t is AIS, LOS or inv lid input:
(1) dis bled: Tr p not sent on ch nge of l rm st tus.
(2) en bled: Tr p sent on ch nge of l rm st tus.
irt4320dd Firmw reVer - Re d the firmw re version of the m in FPGA in the form t ‘x.y’, where x is the m jor
revision number nd y the minor.
irt4320dd Softw reVer - Re d the softw re version of the processor in the form t ‘x.y’, where x is the m jor
revision number nd y the minor.
irt4320dd Reset - Unit reset control:
(1) norm l.
(2) reset: Resets system to power-up def ult settings. A set with v lue of 2 sent to
this OID will c use system reset to occur.

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Maintenance & Storage
Maintenance:
No regul r m inten nce is required.
C re however should be t ken to ensure th t ll connectors re kept cle n nd free from cont min tion of ny
kind. This is especi lly import nt in fibre optic equipment where cle nliness of optic l connections is critic l to
perform nce.
Storage:
If the equipment is not to be used for n extended period, it is recommended the whole unit be pl ced in se led
pl stic b g to prevent dust cont min tion. In re s of high humidity suit bly sized b g of silic gel should be
included to deter corrosion.
Where individu l circuit c rds re stored, they should be pl ced in ntist tic b gs. Proper ntist tic procedures
should be followed when inserting or removing c rds from these b gs.
Warranty & Service
Equipment is covered by limited w rr nty period of three ye rs from d te of first delivery unless contr ry
conditions pply under p rticul r contr ct of supply. For situ tions when “No Fault Found” for rep irs,
minimum ch rge of 1 hour’s l bour, t IRT’s current l bour ch rge r te, will pply, whether the equipment is
within the w rr nty period or not.
Equipment w rr nty is limited to f ults ttribut ble to defects in origin l design or m nuf cture. W rr nty on
components sh ll be extended by IRT only to the extent obt in ble from the component supplier.
Equipment return:
Before rr nging service, ensure th t the f ult is in the unit to be serviced nd not in ssoci ted equipment. If
possible, confirm this by substitution.
Before returning equipment cont ct should be m de with IRT or your loc l gent to determine whether the
equipment c n be serviced in the field or should be returned for rep ir.
The equipment should be properly p cked for return observing ntist tic procedures.
The following inform tion should ccomp ny the unit to be returned:
1. A f ult report should be included indic ting the n ture of the f ult
2. The oper ting conditions under which the f ult initi lly occurred.
3. Any ddition l inform tion, which m y be of ssist nce in f ult loc tion nd remedy.
4. A cont ct n me nd telephone nd f x numbers.
5. Det ils of p yment method for items not covered by w rr nty.
6. Full return ddress.
7. For situ tions when “No Fault Found” for rep irs, minimum ch rge of 1 hour’s l bour will pply,
whether the equipment is within the w rr nty period or not. Cont ct IRT for current hourly r te.
Ple se note th t ll freight ch rges re the responsibility of the customer.
The equipment should be returned to the agent who originally supplied the equipment or, where this is not
possible, to IRT direct s follows.
Equipment Service
IRT Electronics Pty Ltd
26 Hoth m P r de
ARTARMON
N.S.W. 2064
AUSTRALIA
Phone: [phone] F x: 61 2 9439 7439
Em il: [email protected]